<template>
  <div class="cartcontrol">
    <div class="cart-decrease" v-show="food
    .count>0" @click.stop.prevent="decreaseCart" transition="move">
      <span class="inner icon-remove_circle_outline"></span>
    </div>
    <div class="cart-count" v-show="food.count>0">{{food.count}}</div>
    <div class="cart-add icon-add_circle" @click.stop.prevent="addCart"></div>
  </div>
</template>

<script type="text/ecmascript-6">
  import Vue from 'vue';
  export default {
    props: {
      food: {
        type: Object,
        default() {
          return [
            {
              count: 10
            }
          ];
        }
      }
    },
    methods: {
      addCart(event) {
        if (!event._constructed) {
          return;
        }
        // console.log(this.food);
        if (!this.food.count) {
          Vue.set(this.food, 'count', 1);
          this.food.count = 1;
        } else {
          this.food.count++;
        }
        // 派发一个事件
        this.$dispatch('cart.add', event.target);
      },
      decreaseCart(event) {
        // console.log('click');
        if (!event._constructed) {
          return;
        }
        if (this.food.count) {
          this.food.count--;
        }
      }
    },
    created() {
      // console.log(this.food);
    }
  };
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  .cartcontrol
    // font-size 0
    .cart-decrease
      display inline-block
      padding 6px
      transition all .4s linear 
      &.move-transition
        opacity 1
        transform translate3d(0, 0, 0)
      .inner
        display inline-block
        line-height 24px
        font-size 24px
        color rgb(0, 160, 220)
        transition all .4s linear 
        transform rotate(0)
      &.move-enter, &.move-leave
        opacity 0
        transform translate3d(24px, 0, 0)
        .inner
          tranform rotate(180deg)
    .cart-count
      display inline-block
      vertical-align top
      width 12px
      padding-top 6px
      line-height 24px
      text-align center
      font-size 10px
      color rgb(147, 153, 159);

    .cart-add
      display inline-block
</style>
